Table 1: Demographic table.

Author & year

Sample Size

Follow up

Location

ARDS definition

Intervention

Ventilation strategy

Risk of bias

Low

Unclear

High

Gainnier, 2004 [11]

56 patients

ICU discharge

France four ICUs

American-European consensus definition. (PaO2/FiO2 ratio < 150)

A cisatracurium bolus of 0.2 mg/kg followed by an infusion at a rate of 5 g/kg/min vs. saline at 4 mL/h

VAC 6-8 ml PBW. PEEP by ARDs network. NO allowed. Prone position if PaO2/FiO2 was < 60 mmHg for 30 min.

71.4%

28.57%

0%

Forel, 2006 [12]

36 patients

ICU discharge

France three ICUs

American-European consensus definition.

(PaO2/FiO2 ratio < 200)

A cisatracurium bolus of 0.2 mg/kg followed by an infusion at a rate of 5 g/kg/min vs. saline at 4 mL/h

VAC 4 -8 mL PBW. Plateau pressure < 30 mmHg. PEEP by ARDs network

71.4%

28.57%

0%

Papazian, 2010 [13]

339 patients

90 days

France 20 ICUs

American-European consensus definition.

(PaO2/FiO2 ratio < 150)

A bolus of 15 mg cisatracurium followed by 37.5 mg per hour for 48 hours vs. placebo.

VAC 6-8 mL PBW. Prone position. Inhaled NO. Almitrinebismesylate. Open label cisatracurium.

100%

0%

0%

Lyu, 2014 [14]

96 patients

21 days

China one ICU

The Berlin definition. (PaO2/FiO2 ratio < 150)

A bolus of 0.1 mg/k vecuronium followed by 0.05 mg/kg/h for 24-48 h. Usual treatment for control group.

VAC 6-8 ml/kg PBW. Plateau pressure < 35 cmH2O. PEEP according to the best oxygenation PEEP method.

57.14%

42.85%

0%

Guervilly, 2017 [15]

30 patients

ICU discharge

France two ICUs

The Berlin definition. (PaO2/FiO2 ratio < 150)

A bolus of 15 mg cisatracurium followed

by 37.5 mg per hour for 48 hours. Usual treatment for control group.

VAC 6 mL PBW according to the original ARDS net protocol.

57.14%

42.85%

0%

Moss, 2019 [19]

1008 patients

12 months

USA 13 ICUs

The Berlin definition. (PaO2/FiO2 ratio < 150)

A bolus of 15 mg cisatracurium followed by 37.5 mg per hour for 48 hours with concomitant deep sedation. Usual care without routine neuromuscular blockade and with lighter sedation targets.

Low tidal volume ventilation within 2 hours after randomization and a high PEEP strategy for up to 5 days after randomization

57.14%

0%

42.85%

ICU: Intensive care unit; VAC: Volume assist control; PEEP: Positive end respiratory pressure.